When I said no waxies, it was because they are the lowest of the worms in nutrition and since you're paying $ for them, might as well have a worm with higher nutrition. Beardies are rather expensive to feed anyway.
Very High: silkworms,phoenix
High: roaches
Moderate: superworms,crickets,hornworms
Low: butterworms,mealworms
Very Low: waxworms